<html>
	<head>
		<title></title>
		<style type="text/css">
			.item{
				width: 100px;
				height: 100px;
				background: purple;
				
				border: solid green 5px;	/*边框:实线 颜色 宽窄*/
			}
		</style>
	</head>
	<body>
		<div class="item">001</div>
		<div class="item">002</div>
		<div class="item">003</div>
		<div class="item">004</div>
		<div class="wrap">005</div>
	</body>
</html>